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本文根据1959—1988年水文和水质资料计算了海南岛河流多年平均物理侵蚀率(13.99mg/cm~2·a)和化学侵蚀率(15.97mg/cm~2·a)。此二值大大低于台湾岛河流侵蚀率的数值,主要原因是“台湾岛自上新世以来一直处于迅速上升运动中”。夏威夷群岛河流的物理侵蚀率和化学侵蚀率很低,但由于那里的玄武岩孔隙的渗透性强,其地下水的化学侵蚀率较高,所以地表水和地下水的总化学侵蚀率与海南岛相比不相上下。
Based on the hydrological and water quality data from 1959 to 1988, the average annual physical erosion (13.99 mg / cm ~ 2 · a) and chemical erosion (15.97 mg / cm ~ 2 · a) of the rivers in Hainan Island were calculated. This value is much lower than the erosion rate of Taiwan Island rivers, mainly because “Taiwan Island has been in a rapid upward movement since the Pliocene.” Physical erosion and chemical attack rates are very low for the Hawaiian Islands, but total chemical attack rates for surface and groundwater are not as high as those for Hainan because of the high permeability of basaltic rocks there and their chemical attack rate of groundwater is high Phase up and down.